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Priority claimed from JP54089665Aexternal-prioritypatent/JPS5822729B2/en
Priority claimed from JP13198579Aexternal-prioritypatent/JPS5655921A/en
Priority claimed from JP13905279Aexternal-prioritypatent/JPS5662227A/en
Application filed by Ricoh Company, LtdfiledCriticalRicoh Company, Ltd
Priority claimed from EP80900559Aexternal-prioritypatent/EP0025457B1/en
Application grantedgrantedCritical
Publication of ATE8184T1publicationCriticalpatent/ATE8184T1/en